Valve for pneumatic tires.



`W12-1?; s; Tk. SA.- HAMMOND.' VALVE FOB. PNEUMATIG TIRES. 1 f' APPLICATION FILED IL N. I7, v19O7.

lPatented Aug. 13

o a a o w, 1 .,V ry .1 www UNiTED STATES PATENT; onirica.

'WILLIAM P."HAMMOND, 'OF NEW YORK,y N. lY., AND TH'EGDORE A. HAMMQND, OF

' PASSAIC, NEW JERSEY.

Application filed January 17, 1907.

Twill whom it may concern:

Be it known that We, `WILLTAM l. HAM- Moni), ay citizen of the United States, and a resident of' the city, county, and State ot New York, and THnonoRE A. HAMMOND, a citizen of the United States, and a resident of the city of Passaic and county of Passaic amd vState of .New Jersey, have invented new'a'nd ruseful Improvements in Valves for Pneumatic Tires; and in order that thosev skilled in the art may understand, make, and ,use the same give the following specilisation thereof.

Our invention relates to valve stems such as are used -on pnemnatic tires for wheels of vehicles and the .object of the invention is tofpnoduce a valve stem of simple and reliablefoonstruction which shall automaticallv regulate and determine the air pressure 1n` rkplace and always allai-labio for securing proper tire inflation conditions; and this .Without materially changing the forni, ap-

'.pearance or dimensions of the valvesteni,

or 1nterfering with its use inthe usual wav.

In the accompanying drawingY we have illustrated a. form of valve stein involving our Iinvention in which;

lFigure l is a vertical sectional view, I lig. 2 is a view showing the upper portion of the stern with the hood 1'emoved,'l3`ig. 3 is a .detail view on an enlarged scale.

The valve stem comprises a barrel 1 within which are arranged the working parts of the device. This barrel is enveloped in a 'hood 2 which is removed when the tire is to be iniiated. The lower end 43 of the stem is formed solid and is provided with the usual means, such as a flange fl and screw collars 5 and -6 or securing the same in the tire.

Within 'the barrel l near the top thereof is a head 7 in which is arranged a check Specification of Letters atent.

Serial No. 352,791.

valve S of the ordinary kind. From the lower end of the head T .extends a .tube 9 which for-nis the induct for the air to the tire. ln its normal position this induet extends to the lower end of the stem, passingr through a bore or channel l0 in the solid lower portion thereof. The .bore l0 coininunicates at its lower end with the interior of the tire and forms an educt for the air therein .admittingl .the air to 'the lower side of the head 7. dt will be seen that the ducts 9 and l0 are concentrieall) arranged with the latter surrounding the former. The upper portion of the educt l0 above the solid portion Blof the stem is formed by a sleeve -ll secu-red at its lower end in `said solid por tion by soldering or otherwise. A sleeve l2 is also soldered or otherwise suitably secured at its upper end to the head 7 and extends downwardly to the end of the solid portion Between the Ahead 7 and the solid portion 3 is formed a chamber in which is arranged a spring 13 which surrounds sleeve ll and occupies the annular space between sleeves ll and l2. This spring is held be tween a collar li on the upper end of sleeve ll and the inturned lower end of the sleeve l2 so that the said spring" will be put under compression between said inturned `lower end of sleeve l2 and collar lst when the head 7 nieves upward as will be hereinafter more clearly described. washer l5 of leather or other suitable packing material is secured at the upper end ot sleeve ll between collar 14 and a collar v16. This washer is top revent leakage or escapefoi air past or between it and the inner wall of sleeve l2. An eX- pansion spring 2O is provided to keep the washer 15 pressed `against `the walls of the sleeve to insure an air tight Contact and this is Yfurther insured automatically by the air pressure on said washer which is of somewhat an inverted umbrella type as shown in Fig. 3.

The upper end of head 7 is marked with a scale or graduation l? (see Fig. 2') which indicates the degree of air pressure within the tire as hereinafter explained. In the sleeve l2 at a point determined by the desired or proper pressure to which the tire is to be inflated, is a relie-l` or blowoi aperture 18. j From the foregoing description the operation of the device will be readily understood..

The tire is inflated in the 'usual manner Partented Aug. 13,12%?.

.llo

by removing hood 2 vand attaching the pump or other inlating means to the stem. As the pressure' in the tire rises during inliation, and cfluct 10 being opened to the interior of the tire, air Will issue through said educt and the pressure will be exerted upon the head 7, which operates' as a pressure head. This causes the head 7 to rise against the action ot' a spring lf3. As head 7 rises the `.qrmluations 17 thereon will appear above the edge ot barrel 1 and the degree of' pressure in the tire will be thus indicated.- As head 7 continues to rise aperture 18 in sleeve 12 will'rise above the washer 15 and permit the air to escape through said aperture into barrel 1 whence it finds escape at the top of the stem. then the hood 2 is in place there is no leakage' since all tendency thereto is prevented by the packing or seat 21 of leather or rubber or other suitable material in the head of said hood. The pressure on the head 7 will he thus relieved by the escape of air through said aperture 18. and head 7 `will descend until said4 aperture 18 falls below the washer 15. rlhis not only prevents excessive pressure being developed in the tire, but will limit the pressure therein to the proper predetermined degree isuited for a given tire.

It will be noted that the head 7 may be revolved to bring the scale 17 to view should ithappen that. in aiiixing the valve stem to a.

shown, as the structural features thereof nmy. and can be altered or changed without departing from the scope or tenor of our following claims.

llaviiu;v thus described our invention what we clain and desire to secure by Letters llatcnt is: f, 1. "lhe combination of movably mounted 'v 'ive mechanism` comprising a valve and its seat. the valve being movable to and `from its seat, and pressure-indicating means ior showing varying pressures, operatedby the mm'ement of said mechanism.

The combination of movably mounted xilve mechanism, comprising a valve and its seat, the valve being' movable to and trom its scat, means for placingr said mechanism in eomnmnication with the pressurecontaining structure', at all points in the movement ot' said mechanism. and indicating mean# for showing varying pressures, operated by the movement of said' mechanism. A

The combination of a stem orcasing laptrd to be attached to a fluid-pressure receiving structure, a valve mecl-anism movably mounted in said easing, comprising a valve and its seat, to and from Which'tlie'" n valve is movable", and indicating ineans for showingr varying pressures Withm sald structure, operated by the movement of said mechanism. v

'4. The combination of a stem or casing adapted to be attached to a fluid-pressure receivingstructure, an inwardly openin valve mechanism movably mounted 1n sai `asing, an extensible and contractible connection between said valve mechanism and the interior of the pressure receivin structure, and indicating means operated valve mechanism.

The combination of movably mounted valve mechanism, comprising a valve and its seat, the valve being movable to and 'from its seat, pressure indieating means for showing varying pressures operated by the movement of said mechanism, and automatic means for relieving excess pressure.

G. The combination of a stem or casing adapted to be attachcdto 'a Huid-pressure receiving" structure, and inwardly opening valve mechanism movably mounted in said casing, an extensible and eontractible connection between said valve mechanism and the interior of the pressure-receiving structure, indicating means .operated by said valve mechanism. and a spring opposing the movement of he indicating means by pressure on the valve mechanism.

7. T he combination, with a pneumatic tire, oi a pressure indicator comprising a tube or casing attached to the tire for showing varying pressures Within the tire, and a member slidably connected with said tube or casing having a. pressure-receiving part im communication with the interior of the tire.

8. The combination of movably mounted valve mechanism, comprising a valve and its seat, to and from which the valve is movable, pressure indicating means operated by the movement of such mechanism, a spring yieldingly opposing the movement of the indicating means' by pressure, and means to positively prevent movement of the indicator by pressure on said mechanism.-

f). The combination of a movably mounted valve mechanism, comprising a valve and its seat, to and from which the valve is movable, pressure indicating meansfopcrateri by 'the movement of such mechanism, a spring yicldingly opposing the movement of the indicating means by pressure, and a screw cap adapted to engagev the vvalve inechanism and hold it from movement by pressure. l

10. The combination of. a pressure indicater having a spring acting yieldingly in opposition to pressure to move the indicator, and means to positively hold the indicator from movement by such pressure.

11. The combination of movably mounty said.

ssa

Iii

its seat, to and from which the valve is mov- I produce` telescopic .valve mechanism comprising a valve and its verably associated with said telescoping memsuch telescopic movement of the and means operated by the moveved valve mechanism comprising a valve and opposing members,

able, means for placing-said mechanism in communication with a pressure containing structure, means operated by the movement of said mechanism for preventing an excess of pressure in the containing structure, a spring opposing the movement et' the mechanism by pressure, and means to positively prevent movement of the mechanism by pressure thereon.

12. The combination of movably mounted pressure Within the tire.

15. The combination with a pneumatic tire of valve mechanism therefor, compris` ing two telescoping members, means for to a tire, an inwardly opening valve in the'- other of said telescoping members, means operably associated ywith said telescoping members to form an air tight connection therebetween, bers provided with a chamber adapted to communicate with the interior of the tire, the pressure Within the chamber tending to produce sliding movement of the telescoping inemberiig, sliding movement of the telescopmg members, and means whereby the pressure may' be indicated by the movement of the telescoping members.

seat to and from which the valve is movable, means for placing said mechanism in communication with a pressure 'containing structure, means operated by the movement of said mechanism for preventing an excess of pressure in the containing structure, a spring opposing the movement of the mechanism by pressure, and a screw-cap adapted to engage the valve mechanism and hold it from movement by pressure.

13. The combination with a pneumatic tire, of pressure indicating means comprising two telescoping members, means opmembers; a check valve mechanism comprising a valve and its seat to and from which it is movable, said mechanism being removably mounted Within oneof said members to form .an air-tight connection therebetween duning the movement ot one of the members, said means'being acted upon by pressure from Within the tire tending to movement .of the members, means opposing such telescopic movement of the members, and means operated by the movement of said members to prevent an excess pressure Within the tire. I

1li. The combination with a pneumatic tire of pressure indicating means comprising two telescoping members, a valve mechcommunication with the interior of a pneu- `matic tire; means operably associated with said telescoping members to normally orm an air-'tight connection therebetween during being acted upon by pressure from Within the tire tending to produce telescopic movement of the member; means opposing such movement; and means controlled by the vby the pressure may be indicated by yblov'vanism comprising/a valve and its seat, to ing oi or -relieving excess pressure from and from which it is movable, mounted in Within the tire. one of the members, means operably asso- .XVILLIAM R HAMMOND.

ciated with said telescopmg members to form an air tight connection therebetween, THEODORE A. HAMMOND.

said means being acted upon by pressure lilitnesses: from With-in the tire tending to produce y J. Gr. BISHOP, telescopic movement of the members, means P. F.. SONNEK.

ment of said members to prevent an excess securing one of said telescoping members 55 one ot' the telescoping mem- 60 a spring opposing the said 16. The combination of two telescoping bers; means for placing said members in the movement ot' the members; said means 80 telescopic movement of the members where- '85 DISCLAIMER.

' 1,035,185.Wz'llam P. Hammond, New York, N. Y., and vTlzeod'ozre Hammond,

Passaic, N. J. VALVE Fon .PNEUMATIC TIRES. Patent dated August 13, 1912. Disclaimer filed July 14, 1922, by the assignee, A. iS'cw'aders Sou, [11001790` rated. Hereby disclaim from the scope of each and all of the claims of said Patent No. 1,035,185, (l) any combination which does not constitute a valve for pneumatic tires as such -term is understood in the art, and was so understood atfthe date of said patent, that .is to sziy,` a vlve or valve stem constructed andradapted for connection with a pump or other inflatng means for the purpose of inating the tire, and (2) any combination of elements in which the valve mechanism set forth in the claims does not comprise thel inwardly-opening check valve and seat of such pneumatic tire valve or Valve stem.

[Oyfaz'al Gazette July/.25, 19:22.] 

